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7 votes
Accepted

Megapixel number - how many sub pixels?

A megapixel is literally 1 million pixels. There's no concept of sub-pixels (more on that in a moment). E.g. suppose a camera has a sensor resolution of 6000 x 4000 (to make the math easy) ... that ...
Tim Campbell's user avatar
  • 3,957
6 votes

Distortion towards the edges/corners of the field of view in an image

This is perspective distortion, and it is an inevitable outcome of projecting a three-d world onto a flat surface. See What is the difference between perspective distortion and barrel or pincushion ...
mattdm's user avatar
  • 143k
6 votes

Does having larger pixel pitch (more microns) makes camera brighter at night?

ISO should mean the amount of light that must be received by the sensor to provide a proper exposure. As such, it is independent of pixel size. The 6 micron pitch sensels will receive 36/16 times ...
Ross Millikan's user avatar
5 votes

What is the meaning of pixel size for sensors

The pixel size which is mentioned in the size is the size an actual physical pixel has on the sensor itself. So it gives the size the pixel takes in silicon on the sensor. What you are talking is the ...
LuZel's user avatar
  • 699
5 votes

Megapixel number - how many sub pixels?

There is a 1:1 correspondence between photosites and pixels in the resulting image. (Or close to that, give or take some things like distortion correction.) With most cameras, these photosites are ...
mattdm's user avatar
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5 votes
Accepted

Does the bigger pixel area of the Fujifilm XT-10 make it a better choice than the XT-100?

First important lesson: these automated comparison sites are terrible. They emphasize things which just aren't important and make them sound like a big deal. You say: XT 10 has a bigger pixel area ...
mattdm's user avatar
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4 votes
Accepted

Why does a more expensive camera have fewer pixels?

Apart from everything in Why does the Canon 1D X MK 2 only have 20.2MP For your two examples specifically: The EOS 5DS shoots 7 frames/sec, the EOS-1D X MARK II 14. That alone could be a good ...
ths's user avatar
  • 7,171
4 votes
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Airy disks and pixel pitch on circle of confusions?

Pixel pitch does not determine the standard CoC limit, and it is not a factor considered in the DoF calculations. That's because the accepted CoC limit for normal viewing by an average individual is ...
Steven Kersting's user avatar
3 votes

Airy disks and pixel pitch on circle of confusions?

I am not sure if you are trying to juxtapose claim about machine learning and claim about human vision. These are very different scenarios and clearly the CoC is defined differently. Even though the ...
Euri Pinhollow's user avatar
3 votes
Accepted

Image size trade-off with exposure

So it appears that there is a 1:1 correspondence between the sensor pixels and the image pixels. Is this the same with all cameras? Pretty much, yes. The image pipeline in the camera will always ...
Philip Kendall's user avatar
3 votes

Is it a bad idea to use a retina display for retouching?

It depends on what your output is going to be. There is no simple answer to the proper amount of sharpening. Any number of factors can impact your decisions on processing an image. How it will be ...
AJ Henderson's user avatar
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3 votes

Why does a more expensive camera have fewer pixels?

Reliability. Speed. Megapixels. In a handheld, battery powered form factor you can only have two out of the three that are at the absolute state of the art. Cameras such as the 1D X Mark II and the ...
Michael C's user avatar
  • 175k
2 votes
Accepted

sensor pixel size and image quality

No. The sensor is made of discrete photosites. When you reduce the resolution, the RAW data is still the same except that it is downsampled when rendered into a JPEG. So the pixels and amout of area ...
Itai's user avatar
  • 103k
2 votes

Does the bigger pixel area of the Fujifilm XT-10 make it a better choice than the XT-100?

... small sensor pixel area and the reason I got the 35mm lens... It seems you are confusing "pixel area" with "small sensor". Pixel area is associated with pixel density and does not affect the ...
xiota's user avatar
  • 27k
2 votes

Distortion towards the edges/corners of the field of view in an image

What you are observing is: Objects close to the camera reproduce large and object further from the camera reproduce small. This is not a digital thing vs. an analog thing, welcome to the world of “...
Alan Marcus's user avatar
  • 39.3k
2 votes

Does having larger pixel pitch (more microns) makes camera brighter at night?

The lens' aperture diameter (entrance pupil) determines how much light passes through the lens, and the lens' magnification (focal length) determines how spread out that light is; those two factors ...
Steven Kersting's user avatar
2 votes

Does having larger pixel pitch (more microns) makes camera brighter at night?

Sensors with large pixels are one possible way to make a camera usable at higher ISO settings without suffering from too much noise (this is the way eg the Sony A7s series and Nikon D3s/D4 do it). ...
rackandboneman's user avatar
2 votes

Image size trade-off with exposure

In terms of exposure (light density/noise/etc) everything revolves around light/area, not light/pixel. If you have more pixels in an area it just means each gets less light, but the total remains the ...
Steven Kersting's user avatar
2 votes

Airy disks and pixel pitch on circle of confusions?

The CoC is traditionally based on what will be visible in the final picture. It's not affected by pixel size, because frankly you can't see individual pixels on any reasonably sized print taken with ...
Mark Ransom's user avatar
  • 1,495
1 vote

Airy disks and pixel pitch on circle of confusions?

Check out Photographic Lenses by C.B Neblette: Paraphrased: The circle of confusion size is based on the diameter of the largest circle which will appear as a point from a given viewing distance. ...
Alan Marcus's user avatar
  • 39.3k
1 vote

Megapixel number - how many sub pixels?

The word subpixel comes into play in the jargon of photography when we display an image. The red, green, and blue glowing components of the display, TV or computer or projection screen. In other words,...
Alan Marcus's user avatar
  • 39.3k
1 vote
Accepted

Apparent size of subject in two different cameras with the same resolution and focal length (or FOV)

Apparent size of subject...Will the image of the subject be the same size across both cameras? IMO, there are three different answers. Which one is correct depends on what you think "apparent size" ...
Solomon Slow's user avatar
1 vote

Apparent size of subject in two different cameras with the same resolution and focal length (or FOV)

The size of the projection of the subject on the sensor plane will be the same since the lenses are identical. So it all depends on how many pixels the sensor has to cover that size, which is down to ...
xenoid's user avatar
  • 21.5k
1 vote
Accepted

pixel binning vs higher individual pixel size

But how does this work in practice? Are there trade-offs involved? There are always trade-offs involved. In the case of quad-pixel and now nona-pixel sensors, the amount of color resolution is ...
Michael C's user avatar
  • 175k
1 vote

Need help choosing between two DSLR/lens setups

With regards to the body, there is no question: the D7500 is far better suited to fast action photography. The D500 would be even better, but is perhaps outside your price envelope. The choice of ...
chulster's user avatar
  • 659
1 vote

Does the bigger pixel area of the Fujifilm XT-10 make it a better choice than the XT-100?

The D3200, T10, and T100 are all APS-C as far as I can tell, so no difference in sensor size. More focus points is a double-edged sword. I disabled most of the points in my T6 (it as only 9, I'm ...
Fábio Dias's user avatar
1 vote

Why does a more expensive camera have fewer pixels?

Let's address your issues with existing answers : All pixels are not equal Each of the said cameras have a full-frame sensor. Increasing the pixel count may make each pixel capture less light, but ...
StephenG - Help Ukraine's user avatar

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